You've undoubtedly seen those geographically-styled square patterns on everything from bus stop ads to business cards to product labels. But what are they, and what do they do?

These graphics are called quick response, or QR codes and they're barcodes for the mobile era. Containing vital product information captured within a pattern, QR codes are easily scanned from your phone or tablet with the use of a QR reader app. Once scanned, the codes bring users to a website, sales page, or other promotional platform that provides information, ecommerce opportunities, or special promos. While not a ubiquitous tool like a website or social media, a QR code can provide a significant boost to your small business.

QR Codes and Your BusinessCountries like Japan use QR codes virtually everywhere, on products from fast food to shampoo bottles. In the US, these codes aren't quite as popular. But when used properly, they can give customers a fast and easy way to connect with your brand. Most tech-savvy consumers have a QR reader on their smart phones already, putting your brand in front of a market of millions.

How to Use QR CodesUsing QR codes in business can be a great way to advertise your small business brand, and tools such as your website and mobile app. Adding a QR code to your existing print marketing material is fast and simple, and QR codes are quick – and oftentimes free – to create, providing a low-cost way to expand your marketing efforts.

Finding the right place to point visitors is key. It must be a mobile-friendly destination that offers value.A QR code is also a great way to support your mobile app. The code can send customers to a download screen for your mobile app, growing a base of fans and followers organically.

Low-Cost MarketingWith free generators available across the web, including products by companies like Google, you can get started with QR codes with a minimal investment. Giving QR codes a try can make a big difference without disrupting the marketing campaigns you already have in place.

Easily MeasurableTracking who visits your website or app through a QR code is fairly easy, giving you a way to determine how well your campaign is working. If after you first publish your QR code you see a spike in traffic, you'll know your QR code is working as you'd hoped. If there's no growth, you can adjust your tactics to promote the results you have in mind.

Simple to UseEven if customers haven't yet downloaded a reader app, many phone users recognize what a QR code is. The concept is incredibly basic – capture an image with your phone's camera – and requires little tech skill to get right, making this marketing method ideal for everyone.

Triggers Customer CuriosityBy tempting those who encounter your business cards, advertisements, or promotional material with a surprise when they choose to engage, you can pique consumer interest in a truly simple fashion.​If you've never considered QR codes, it may be time to give this fun and fast opportunity a try. Free to create and easy to implement, you can direct prospects and customers to your mobile app or site without significant effort or investment.